DOI: 10.1029/2017JG004082
Scopus记录号: 2-s2.0-85046535429
论文题名: Geochemical and Microstructural Signals in Giant Clam Tridacna maxima Recorded Typhoon Events at Okinotori Island, Japan
作者: Komagoe T. ; Watanabe T. ; Shirai K. ; Yamazaki A. ; Uematu M.
刊名: Journal of Geophysical Research: Biogeosciences
ISSN: 21698953
出版年: 2018
卷: 123, 期: 5 起始页码: 1460
结束页码: 1474
语种: 英语
英文关键词: giant clam
; oxygen isotope ratio
; sclerochronology
; trace elements
; typhoon
Scopus关键词: barium
; bivalve
; calcium
; chronology
; environmental change
; geochemistry
; microstructure
; oxygen isotope
; proxy climate record
; sea surface temperature
; shell
; stable isotope
; trace element
; typhoon
; Bonin Islands
; Honshu
; Japan
; Kanto
; Okinotori Island
; Tokyo [Kanto]
; Bivalvia
; Tridacna maxima
英文摘要: To validate the usability of the giant clam shell as a recorder of short-term environmental changes such as typhoons, we collected a live Tridacna maxima from Okinotori Island, Japan, on 15 June 2006. Growth increment thickness, stable isotope ratio (δ18Oshell, δ13Cshell), and the barium/calcium ratio (Ba/Ca) in the T. maxima shell sample were measured and compared to Okinotori Island instrumental environmental data. In the outer layer of the shell sample, there were 365 ± 6 growth increments per year, as estimated by the δ18Oshell profile compared with sea surface temperature. The growth increments in the specimen were formed daily, and thus, we can determine the date of the sampling points of δ18Oshell, δ13Cshell and the Ba/Ca ratio by counting growth increments. After typhoon approach, there is a decrease in increment thickness and some disturbed growth increments. The positive peaks in the shell Ba/Ca ratio and δ18Oshell corresponded to lower sea surface temperature caused by typhoons. These results indicated that the microstructural and geochemical record in Tridacna maxima shells could be useful for detecting past typhoon events. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114029
Appears in Collections: 气候减缓与适应
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作者单位: Department of Natural History Sciences, Faculty of Science, Hokkaido University, Sapporo, Japan; KIKAI institute for Coral Reef Sciences, Kikai town, Japan; Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Japan; Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University, Fukuoka, Japan
Recommended Citation:
Komagoe T.,Watanabe T.,Shirai K.,et al. Geochemical and Microstructural Signals in Giant Clam Tridacna maxima Recorded Typhoon Events at Okinotori Island, Japan[J]. Journal of Geophysical Research: Biogeosciences,2018-01-01,123(5)